Closure fastener for tumbling barrels



Jlm 949. R. E. BOGEMA CLOSURE FASTENEB FOR TUMBLINQ BARRELS Filed May 4,1945 INVENTOR. Rickard f fioyvma BY I 6 M? jg. i.

A TTORNEY5.

Patented June 28, 1949 CLOSURE FASTENER FOR'TUMBLING ARRELS Richard E.Bogema, Sturgis, Mich., assignor to The Sturgis Products Company,Sturgis Mich,

a corporation of Michigan Application May 4, 1945, Serial No. 591,925

1 Claim. (Cl. 292-241) This invention relates to improvements in closurefastener for tumbling barrels.

The mainobjects of this invention are:

First, to provide a tumbling barrel in which excess or undesiredpressures which may be developed within the barrel are relieved withoutdanger of the cylinder exploding, thus eliminating the injury hazard tothe operator. Previous relief valves clogged with compound and partsfrom the tumbling action and were rendered useless.

Second, to provide in a tumbling barrel a door structure which iseffective in providing desired closure seal and at the same time willyield to abnormal pressures, providing a relatively wide area. oropening for the escape of gas.

Third, to provide a structure in which the doors or closures are verysecurely retained and at the same time a door which is relatively lightand easily handled in opening and in closing.

Fourth, to provide in a tumbling barrel a closure structure in which thedoor is securely clamped: when closed, the clamping. means beingprovided with safety lugs which permit inspection of the contents withinthe barrel to determine whether it is wedged or piled against the doorprior to full releasing ofthe door securing means. Also, to permit thepartial releasing of the door so that any pressure within cannot throwthe door against the operator.

Fifth, to provide a structure having these advantages which is simpleand economical in its parts.

Objects relating to details and economies of the invention will appearfrom the description to follow. The invention is defined and pointed outin the claims.

A preferred embodiment of the invention is illustrated in theaccompanying drawing, in which:

Fig. 1 is a fragmentary side elevation of a tumbling barrel embodyingthe features of the invention, the door of one compartment being removedand one of the latch members for the door illustrated being disengaged.

Fig. 2 is an enlarged fragmentary View mainly in section on line 2-2 ofFigs. 1 and 3.

Fig. 3 is an enlarged fragmentary view mainly in section on line 3-3 ofFig. 1.

Fig. 4 is an enlarged fragmentary view mainly in section on line 4-4 ofFig. 1.

Fig. 5 is an enlarged fragmentary view mainly in section on line 55 ofFig. 1.

Fig. 6 is an inverted view of one of the cam latch members, the handlebeing omitted.

Fig. '7 is a plan view of one of the latch members, the handle beingpartially broken away,

shown in.- open position by full lines and in closed position by dottedlines.

Referring to the drawing, the tumbling barrel designated generally bythe numeral IV is. of thepolygonal type and is provided with transverse:partitions, one indicated by dotted lines 2 divideing the barrel intocompartments. These com-- partments are substantially liquid and gastight.

The sidewall panel 3 is provided with a: door opening 5 for eachcompartment. A door 5; is provided for each door opening. The door is aflat panel and is provided with an angle iron reinforcing member 6spaced from its edges, this reinforcing member constituting, a supportfor the gasket '5. The gasket is arranged between; the members ii andthe gasket retaining strips 8, also secured on the inner side of thedoor. The gasket is adapted to seat against the outer side of the wallpanel and preferably extends inwardly to overlap the edges 9 of the dooropening. This gasket is preferably of yielding resilient material;

such as rubber and applicant has found material of a 35- durometerreading as; satisfactory.

The door is removably secured b means ofv the latch members lEIrotatively mounted on the eut-v wardly projecting studs [2 carried byattaching plates l3 secured to the wall panel. The latches have cammedfaces l4 adapted to ride over the edges of the door to bring therelatively flat faces [5 of the latches into engagement with the side ofthe door as shown in Figs. 3 and 4. The latches are provided withhandles IS.

The latches are spring stressed and the springs I! are arranged on thestuds with their inner ends seated against the latches and their outerends against the thrust nuts l8 which are threaded upon the studs foradjustment thereon. The sheet metal housings l9 are provided to protectthe springs and also to prevent accidental loosening of the nuts.

To facilitate the positioning of the doors a pair of locating rests 2|]are provided for each door, these being preferably arranged at thebottom of the door opening, see Fig. 1. When the latches are disengagedthe door is entirely released. In replacing the door the latches are indisengaged position as shown around the second door opening at the rightof Fig. 1 and the door is positioned by engaging its lower corners withthe angular rests 20, the door swung against the side of the panel andthe latches engaged.

The latch members are provided with projecting nose or lug portions 2|at the end of their cam portions, these nose or lug portions beingadapted to overhang the door when the latch is swung to a partiallyreleased position, as shown in Fig. 5. In releasing the door, theoperator swings the latches to the position shown in Fig. 5 whichreleases the clamping stress on the door, allowing the operator to checkthe door for safetY-that is, to determine whether or not there is anymaterial wedged or packed against the door and also allowing the escapeof any gas pressure that might not be sufiicient to overcome the stressof the latch springs but might be suflicient to impel the door againstthe operator. The tension of the springs is adjusted so that they willyield to abnormal pressures of gas developed within the chamber andpermit the escape thereof around the edges of the opening. Since thereis such a wide area for the escape of gases, there is no possibility ofany clogging of this venting means. The gasket is preferably arranged tooverlap the edge of the door opening as shown in Fig. 5 so that the gascan pass under the same rather than have a wedging action on the gasket.

It will be noted that the door latches are mounted on the barrel ratherthan on the door. This minimizes the weight of the door and in fact thedoor may be made of relatively light material, particularly in view ofthe fact that it is so efiectively clamped and supported. When thelatches are fully engaged the lugs or nose portions 2| engage the stop22 as shown by dotted lines in Fig. 7 and when the latch is fullydisengaged the end of the cam portion engages this stop 22 as shown infull lines.

I have illustrated and described my invention in a very practicalembodiment thereof. I have not attempted to illustrate or describe otherembodiments or adaptations which I contemplate as it is believed thisdisclosure will enable those skilled in the art to embody or adapt theinvention as may be desired.

Having thus described my invention What I claim as new and desire tosecure by Letters Patent is:

The combination in a container having an enclosure wall provided with adoor opening, of a removable door provided with an inwardly facing 1 4gasket adapted to seat against the outer side of the enclosure wall atthe edges of the door opening, latch studs mounted on the enclosure wallat the edges of the door opening, camming latch members rotatablymounted on said studs to be swung into clamping engagement with theouter side of the door, said latch members being pro- Vided withprojecting portions at the front ends of their cam portions whichoverlie the door and are spaced from the door when it is fully closedand when the latch members are in partially open position, stops on saidenclosure wall with which said projecting portions engage when the latchmembers are fully closed, said stops being adapted to coact with therear ends of the latche when the latches are in fully open position, andsprings on said studs at the outer sides of said latch members acting tour e them yieldingly inward, said latch members being rotatable aboutsaid studs in their latching and unlatching movements and slidablelongitudinally of said studs under the action of said springs.

RICHARD E. BOGEMA.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 760,238 Nolan May 17, 1904828,591 Abbe Aug. 14, 1906 1,311,957 Ferris Aug. 5, 1919 1,411,621Goddard Apr. 4, 1922 1,664,972 Dudderar Apr. 3, 1928 2,070,499 TreanorFeb. 9, 1937 2,158,076 Lupo, Jr. May 16, 1939 2,264,180 Koehler Nov. 25,1941 FOREIGN PATENTS Number Country Date 114,415 Austria Oct. 10, 1929185,481 Great Britain Aug. 31, 1922 439,989 Great Britain Dec. 18, 1935

